Home / 1,986.12-2,976.38-1,692.08

Finding the Fourth Proportional to 1,986.12, 2,976.38 and 1,692.08

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Solution

The fourth proportional to 1,986.12, 2,976.38 and 1,692.08 is: 2,535.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.12 : 2,976.38 = 1,692.08 : x
  2. Step 2: Convert to fraction form
    1,986.12/2,976.38 = 1,692.08/x
  3. Step 3: Cross multiply
    1,986.12x = 2,976.38 × 1,692.08
  4. Step 4: Simplify right side
    1,986.12x = 5,036,273.07
  5. Step 5: Solve for x
    x = 5,036,273.07/1,986.12
  6. Step 6: Final answer
    x = 2,535.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.